Editing Tetris (section)

==Gameplay==
[[File:Typical Tetris Game.svg|thumb|A typical ''Tetris'' game screen]]
''Tetris'' is a series of [[puzzle video game]]s with a consistent general design across its numerous entries.{{sfn|Plank|2022|p=268}} Gameplay consists of a rectangular field in which [[tetromino]] pieces,{{efn|The standard spelling in mathematics is ''tetrominoes'', while [[the Tetris Company]]'s trademarked spelling is ''tetriminoes''.{{sfn|Plank|2022|p=271}} This article uses the standard spelling for consistency.}} geometric shapes consisting of four connected squares, descend from the top-center. During the descent, the player can move the piece horizontally and rotate them until they touch the bottom of the field or another piece.<ref name=MarkWolf2012/><ref name=GameDesign>{{cite book |url=https://archive.org/details/rulesofplaygamed0000sale/page/143/mode/2up |last1=Salen |first1=Katie |author-link1=Katie Salen |last2=Zimmerman |first2=Eric |author-link2=Eric Zimmerman |title=Rules of Play: Game Design Fundamentals |publisher=[[MIT Press]] |date=2003 |location=Cambridge |isbn=978-0-262-24045-1 |pages=143–144 |via=[[Internet Archive]]}}</ref> The player's goal is to stack the pieces in the field to create horizontal lines of blocks.<ref name=polygon-tips>{{cite web |url=https://www.polygon.com/guides/2019/2/22/18225349/tetris-strategy-tips-how-to-jonas-neubauer |last=Ramos |first=Jeff |title=''Tetris'' Tips from a Seven-Time World Champion |website=[[Polygon (website)|Polygon]] |date=February 22, 2019 |access-date=February 6, 2025 |archive-date=January 14, 2025 |archive-url=https://web.archive.org/web/20250114154632/https://www.polygon.com/guides/2019/2/22/18225349/tetris-strategy-tips-how-to-jonas-neubauer |url-status=live }}</ref> When a line is completed, it disappears, and the blocks placed above fall one row. As lines are cleared, the speed of the descending pieces increase. The game ends if the accumulated pieces in the field block other pieces from entering the field, a process known as "topping out".<ref name="GameDesign" /> Common mechanics among ''Tetris'' variants include soft drop (the ability to increase the descent of the piece), hard drop (instantly placing the piece as far down as it can go), and holding (reserving a piece for later use).<ref name=polygon-tips/>

The objective of ''Tetris'' is to collect as many points as possible during a gameplay session by clearing lines.<ref name=MarkWolf2012/> ''Tetris''{{'s}} scoring system has remained mostly consistent since ''[[Tetris DS]]'' (2006) with some exceptions. Points gained during gameplay increase with the descent speed. The more lines cleared at once, the higher the score for a line clear; clearing four lines at once using an ''I''-piece is referred to as a "Tetris". The player can also gain points by using hard drops or soft drops.<ref name=polygon-tips/> There are advanced techniques that can gain more points than a Tetris, including T-spins (spinning a T-piece into a blocked gap), perfect clears (emptying the field following a line clear), and combos (clearing lines with multiple pieces in a row).<ref>{{cite web |url=https://www.polygon.com/guides/2019/3/6/18244590/tetris-t-spin-perfect-clear-combo-guide |archive-url=https://web.archive.org/web/20190306212036/https://www.polygon.com/guides/2019/3/6/18244590/tetris-t-spin-perfect-clear-combo-guide |last=Ramos |first=Jeff |title=''Tetris'' Advanced Guide: T-spins, Perfect Clears, and Combos |website=[[Polygon (website)|Polygon]] |date=March 6, 2019 |archive-date=March 6, 2019 |access-date=November 12, 2024}}</ref>